Printing press



Dec. 29 1925' PRINTING PRESS Filed March 25, 1918 15 Sheets-Sheet l t I Vivi C) r I 5? 1 1 1 al 1 g L .I 1.Z.' 156 a ii A {)8 i 1 SS 4 INVENTOR. W TNE ES: v lfdwamChafihzfe M QMZwM ATTORNEY Dec. 29, 1925 1,567,177

E. CHESHIRE PRINTING PRESS Filed March 25, 1918 15 Sheets-Sheet 2 I N VEN TOR EdwardC/zes/zua WITNESSES:

Dec, 29 1925- E. CHESHIRE PRINTING PRESS Filed March 25, 1918 15 Sheets-Sheet 4 INVENTORZ Edward 0265/20/19 BY mm )L ATTORNEYS.

@QZZM W Dec. 29, 1925- 1,567,177

E. CHESHIRE PRINTING PRESS Filed March 25, 1918 5 Sheets-Sheet 5 I N V EN TOR. WITNESSES:

lwl/afd/zwhzre A TTORNEYS.

@W. oz w Dec. 29, 1925- '1 1,567,177

E. CHESHIRE PRINTING- PRESS Filed March 25, 1918 15 Sheets-Sheet 6 v I I I N V EN TOR. WITNESSES: Edward. flies/MFG BY Mam b W -n, ATTORNEYS.

'Dec. 29, 1925- 1,567,177

7 E. CHESHIRE PRINTING PRESS Filed March 25, 1918 15 Sheets-Sheet '7 INVENTOR.

WITNESSES: Edy/am? Cheshire.

VfizM BY M W @Qn ATTORNEYS.

E. CHESHIRE PRINTING PRESS Dec. 29, 1925- 1,567,177

Filed March 25, 1918 15 sheets-Sheet 8 INVENTOR. W1/TNEssEs: EdwamC/ifishbre 0? By S I M 7 9 f ATTORNEYS.

Dec. 29, 1925.

v 1,567,177 E. CHESHIRE PRINTING PRESS Filed March 25, 1918 ISSheetS-ShBGt 9 IN V EN TOR. WI TNESSES;

Edward Chas/Life BY 't 34 W ATTORNEYS.

Dec. 29; 1925- 1,567,177

E. CHESHIRE PRINTING PRESS Filed March 25, 1918 15 Sheets-Sheet 10 IN VEN TOR.

ATTORNEYS. 62

Dee 29 E925- E. CHESHIRE PRINTING PRESS Filed March 25, 1918 l Sheets-Sheet 11 I I IN VEN TOR.

Edward Chas/are A TTORNEYS www E. CHESHIRE PRINTING PRESS Dec, 29, 1925- Filed March 25, 1918 15 Sheets-Sheet 1 2 WITNESSES: fliM Dem 29,1925- L56Z1?7 E. CHESHIRE PRINTING PRESS Filed March 25, 1918 1 Sheets-Sheet 1 W! TNESSES- 1N VEN T0 R.

' Edn/ard6/zahzr W 6 I ATTORNEYS.

Dec. 29, 1925' 1,567,177

E. CHESHIRE PRINTING PRESS Filed March 25, 1918 15 Sheets-Sheet 15 125. ig /60 M6 6% IN V EN TOR.

zciwardksmf "MW v A? ATTORNEY W1 TNESSES:

Patented Dec. 29, 1925.

UNITED STATES,

PATENT OFFICE.

EDWARD CHESHIRE, OF MILWAUKEE, WISCONSIN, ASSIGNOR. BY MESNE ASSIGN- MENTS, TO MIEHLE PRINTING PRESS & MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PRINTING PRESS.

Application filed March 25, 1918. Serial No. 224,426.

[0 all w/wm, it may concern:

Be it known thatI, EDWARD CHESHIRE, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Printing Presses, of which the followii-g is a specification.

This invention relates to printing presses. and more particularly to cylinder rinting presses.

'Giie ofithe objects of this invention is to simplify the cylinder type of printing prem, all of the principal motions being rotary or reciprocating or a combination of the two and the parts disposed in a manner whereby the same run in perfect balance at comparatively high speeds.

Another object is to make the various parts more accessible.

Another object is to transfer the stock from one part of the press to another in a i novel and practical manner.

Another object istocontrol automatically, in an improved manner, the operation of the various parts of the press and to arrange the parts to cooperate in a given sequence to meet the various requirements for successful commercial use.

- These and other objects are accomplished by the printing prom disclosed in the following drawings, in which Figure 1 is a side elevation of a printing press, sliowingthe cylinder in its highest position, wherea sheet, after receiving an impression, is about to be taken from the cylinder by the delivery grippers;

Figure 2 is a side elevation from the opposite side, the parts being in the same relative position;

Figure 3 is a front elevation of the printing press;

Figure 4 is a rear elevation of the same press; I

Figure 5 is a plan view of the press;

Figure 6 is a vertical sectional view of the printing press, taken in the planes of irre ular lines 66 of Figure 5;

Figure 7 is another vertical section-alview of the press, showing themechanism for opening and closing the cylinder ippers;

Figure 8 is a view similar to igure 2 with portions removed and the transfer suction shoe in the position it occupies in taking a sheet from the pile or supply taole;

Figure 9 is a front elevation, similar to Figure 3, with the supply table and associated mechanism removed from the press;

Figure 10 is an enlarged fragmentary side elevation of the transfer mechanism and some of the associated parts shown in the same position in which they appear in Figure 8;

Figure 11 is a fragmentary side elevation of the elevating mechanism for maintaining the paper or stock at a predetermined height;

Figure 12 is a fragmentary side elevation of associated parts, including the arm for connecting the supply or stock table mecha nism to the cylinder frame of the press;

Figure 13 is a plan view of the transfer table, and also showing in dotted lines the associated end stop and cylinder grippers;

Figure 14 is a transverse section in the plane of line 1414 of Figure 13;

Figure 15 is a detailed plan view of the suction shoe, by means of which stock is transferred from the stock table to the transfer table;

Figure 16 is a front elevation of the same suction shoe, shown in Figure 15, as indicated by the line 1( 16 of Figure 15 Figure 17 is a transverse vertical section taken in the plane of line l717 of Figure 16;

Figure 18 is a fragmentary side elevation parts be ng in section, of the mechanism for tripping the cylinder;

Figure 19 is a fragmentary vertical section through the inker frame, showing the mechanism for locking the inking rolls and their frame in operative position;

Figure 20 is an end view, parts being in section, of the cylinder;

Figure -21 is a longitudinal sectional view of an associated air pump;

Figure 22 is a vertical sectional view taken in the plane of line 2222 of Figure 21;

Figure 23 is a detailed plan view Of the valve for controlling the suction to the suction shoe, transfer table and cylinder trip mechanism;

. mounted in the main frame. By

Figure 24 is a view taken in the plane of the irregular line 2424 of Figure 23;

Figure 25 is a transverse sectional view of the trip control for the cylinder, including a cylinder and piston, the latter of which is actuated by suction in one direction to cause the-cylinder to move into a printmg position, said piston being actuated positively in the opposite direction for maintaining the cylinder in a tripped position in the event that stock is not transferred to the transfer table, covering the suction holes thereof;

Figure 26 is an enlarged detail view of the delivery grippers;

Figure 27 is a detail view of part of the mechanism for controlling the upward movement of the stock table; and,

Figure 28 is a diagrammatic view of the air control system.

The Various novel features of my invention will be apparent from the following description and drawings and will be particularly pointed out in the appended claims.

The main frame 10 of the printing press is provided with side members 11 and 12, which are connected by suitable integral transverse members 13. Mounted in and ex tending between the side frame members 11 and 12 is a cam shaft 14 carrying a gear wheel 15 keyed thereto, said gear Wheel15 being actuated by a pinion 16 mounted upon a shaft 17, which also carries a pulley 18 around which passes a belt 19 connected to a driving motor 20. Pivoted to the gear 15 and near its peripheryis a connecting rod or link 21, one end of which is connected to an arm 22 keyed to a rock shaft 23, which extends between the side frame members 11- and 12. Secured to an intermediate portion of the rock shaft 23 is a bifurcated arm 24, to the outer end of which .is pivotally con.- nected a link 25, the upper end of which is pivotally connected to a type-bed 26, which carries a chase frame 27, the chase frame being secured to the type-bed in any suitable manner. Secured to the ends of the rock shaft 23 are arms 28, to the outer ends of which are pivoted links 29, which are pivoted at their upper ends to the cylinder frame 30. I

Cylinder mechamz'sm.

Rotatably mounted in the cylinder frame. is the printing cylinder 31, which cooperates with the type for printing purposes, saidcylinder being provided near one end with a gear wheel 32 which meshes with a rack 32 carried by the type bed 26 and being slidably re errin to Figure 20, it will be noted that this cylin er, among other thin s, is provided with gri pars taking the orm of plungers 33, t gripping heads 34 of which are normally arranged at the upper and lower limits of travel, respectively, of the cylinder upon a slide member 40, which is given a quick reciprocatory movement by cam projections 41 and 42 on a disk 43 carried by the cam shaft 14. The cam projections 41 and 42 pass into engagement with a roller 44 mounted in the end of one of the arms of a crank 45 pivotally mounted at 46, the other arm of the crank 45 being pivotally connected to the lower end of the slide member 40.

1 raising mechanism.

Also carried by the cylinder frame (Figures 6 and 19) is an inker frame 47 pivotally connected to the former at 48. This inker frame carries inking rollers 49 and 50 and an ink distributing roll 51, one end of which is provided with a gear 52 (Figure 9) which meshes with a gear 53, which in turn meshes with the rack 32*, whereby the ink distributing roll 51 is positively actuated for performing its function. Pivotally connected to the upper portion of the inker frame 47, is a spring pressed latch 54, by means of which the inker frame may be released to swing about its pivot 48 into its lower position, wherein the inker frame extends outwardly at right angles with respect to the cylinder frame. The inker frame is held in such p0- s1t1on by Its foot 55 engaging the cylinder frame. Located at the lower limit of travel of the inkingrolls is the ink fountain 56 from which ink is supplied.

It will be noted that the type-bed is operatively connected to the rock shaft 23' at one side thereof and that the cylinder frame is operatively connected to the rock shaft 23 atthe other side thereof. These oppositely arranged vvertically and rectilinearly moving parts are balanced with respect to each other so that the same may be actuated at a high rate of speed and at all times run in perfect balance.

Feeder mechanism.

main frame by a lock .on the shaft 62.

secured to the main frame. The extreme outer end of the lock bar rests upon a member and is held in engagement therewith by a pivotally mounted lock member 71. lVhen it is desired to swing the feeder frame away from the main frame it is merely necessary to swing the locking member 71 out of a locking position and raise the lock bar 66, whereupon the feeder frame may be swung. In this connection, however, it is to be noted that another member or arm 72 (see Figures 10 and 12) must be un'latched from the cylinder shaft 73 by depressing the spring-pressed latch 74, whereupon the member 72 may be moved out of operative association with said cylinder shaft. thereby permitting the feeder frame to swing into a position to make the cylinder, inking rolls, chase frame and other parts accessible. This feeder frame carries a stock table 59 (Figures 1, 2, (i, and 8) having a downwardly extending rack 60, which is raised by a gear 61 mounted upon a shaft 62 which also carries ,a ratchetwheel 63, (Figures 10 and 11) cooperating with which are a holding pawl (Stand a stepping pawl can: latter of which is pivotally connected to arm 75 loo: e Pivot-ally connected to the Outer end of the arm 75 is one end of a link 76, the other end of which has a laterally extending portion which is adapted to move in a slot 77 formed in the'ear 78 of a casting 79 mounted on a shaft 80'. To one arm 81 of the casting 79 is pivotally connected one end of the link 72, the other end of which ispivoted to the cylinder shaft 73. From this arrangement it is apparent that as the cylinder 31 moves downwardly, the casting 79 will be rocked forwardly away from the cylinder, thereby causing the rear end of link 76 to move downwardly in the slot 77 unless another element comes into play. This other element (see Figure 11) takes the form of a lever 82, which is pivotally connected at to an arm 84 connected to the supporting shaft 80. It will be noted (see Figure 10) that the arm 72 is provided with a downwardly extending projection 85, which is adapted to pass into engagement with the rounded head 86 of an arm 87 mounted on the shaft 80, said arm 87 normally being held in its highest position by a spring 88, the upper end of which is secured to a book 89 on the feeder frame 58. "he arm 87 also carries a spring-pressed plunger 90, to the upper end of which is pivotally connected a link 91 extending upwardly (see Figures 8 and 15) and connected to the front end of a sucker shoe 9:? or feeder member at the point 93. Links 94' parallel to the link 91 are connected at their upper-ends to the sucker shoe 92 at points 95 and 96 and have their lower ends each connected to the cast ing 79. From the mechanism hereinahove described it will be seen that when the cylinder 31 is moved into its lowermost position, as shown in Figures 8 aml 10, the arm 72 causes the sucker shoe to move into a position over the stock or paper carried by the stock table 59 and causes the projection to pass into engagement with the arm 87 in a manner to depress the. same, thereby cau ing the link 91. through the spring-prcssml plunger to move. thefront portion of the sucker 'shoe down into engagement with the top sheet of paper or stock carried by the stock table. If the top sheet of the stock on the stock table is at a maximum predetermined height, the sucker shoe 92 will be given a minimum dip and in view thereof the spring of the spring-pressed plunger 90 will be compressed a maximum amount, as the arm 87 is depressed. Under such conditions not only is the link 91 drawn down a minimum amount, but also the same is true with respect to the plunger 90. and, therefore, the plunger head (Figure 27). which is enlarged a suflieient amount to pass into engagement with the short arm of the lever 82 when the plunger is depressed a certain amount. When the short arm of the lever 82 is not engaged by the head of plunger 9f), the longer arm'of the lever 82 remains out of engagement with the loose end of link 76. thereby permitting the loo c end of saidlink to move up and down in the slot 77, as the member 7!) is rocked hack and forth by the action of link 72 in accordance with the rising aml falling movement of the cylinder 31. lVhen the free end of the link 76 is free to move back and forth in the slot 77, no motion, or only a slight motion, is transmitted to the arm 76 aml therefore the stepping pawl (35 is not given a large enough throw to cause the ratchet wheel (33 to be actuated for raising the stock table 59. However, as the stock on the stock table 55) is gradually reduced in height. the dip of the sucker shoe 9:! is increased and causes the enlarged head of the plunger 19 to pass into engagement with the short arm of lever 82 to lift the longer arm of lever 82 into a po :ition to limit the travel of the free end of link 76 in the slot 77. Under these conditions the throw of arm 75, and therefore the travel of the stepping pawl (55. is increased when the stock on the stock table has been decreased in height a given amount. For example. when.oneeighth of an inch of stock is removed from the table. the dip of the sucker shoe 92 will increase to such an extent that the plunger 90 will move downwardly a corresponding amount and therefore the head of the plunger will engage the shorter arm of lever 82 in a manner to force the longer arm of lever into a position to hold the free end of lever 76 in the upper portion of the slot 77, where by the stepping pawl 65 will travel a sufficient amount to engage the next notch on lot) &

the ratchet wheel 63 and cause the ratchet wheel (53 to rotate a given increment, thereby rotating the gear 01 to raise the rack 60 and thereby the stock table 59 to raise the stock thereon to the original predetermined height. In this way stock onthe stock table is maintained at substantially a constant height, the variation in heightbeing compensated for by the mechanism herein-above particularly described. In each case the sucker shoe is given sufficient dip to pass into engagement with the top sheet of stock. The function thereof will be considered hereinafter.

Transfer mechanism The paper or other stock torbe printed is transferred or fed from the stock table to a transfer table 97 b the sucker shoe 92 and and from the trans er table to the cylinder 31. This transfer table 97 (Figures 6 and 13) is mounted on a frame 98 having arms 99, pivotally connected at 100 to the feeder frame 58.

Referring particularly to Figure 13, it will be noted that the frame 98 is provided with a plurality of obliquely arranged slots '101, which receive downwardly extending projections 102 on the transfer table 97. From this arran ement it is apparent that if the transfer table 97 is given a transverse movement toward one side of the machine, it will move forwardly and laterally toward the cylinder '31. Its return movement will be rearwardly and laterally away from the cylinder, the last movement being accomplished by means of springs 103. The transfer table 97 is given its forward and lateral movement toward the cylinder 31 by a spring-pressed plunger 104; (Figures 2 and 9), which under certain conditions is forced into engagement with the member 105 secured to the one corner of the transfer table. This spring pressed plunger is carried by the cylinder frame 30, and when this cylinder frame reaches its lower limit of movement the plunger 10 1 comes into registry with a member 106 (Figure 5) mounted ,upon one end of a lever 107, pivoted at 108, the other end of said lever being pivotally connected to a link 109, which in turn is connected to a lever 110 (Figure 4) pivotally supported intermediate its ends at the point 111 and having at its free end a roller 112 lying within the path of movement of a cam projection 113 on the disk 114 mounted upon the cam shaft 14. From this arrangement it is apparent that when the cam projection 113 operates the lever 110, the springpressed plunger 104 is forced into engagement with the transfer table 97 for shifting the same laterally and forwardly toward the cylinder. The real function for shifting the transfer table 97 laterally and forwardly is to carry a sheet of paper or ether stock into engagement with a side stop member 115 (Figures 9 and 13), which is also carried by the cylinder frame in order that the paper or other stock may be properly registered or positioned with respect to the cylinder and the type. During the first part of this transverse movement of the transfer table, the suction at the table is cut off, thereby releasing the stock. During continued movement of the table, the sheet of stock, due to its own weight or frictional engagement with the table, is moved into engagement with the side stop and cylinder grippers and thereby brought into register. The table continues its movement in the same direction even after the stock is registered to positively obtain proper registering and maintain the stock in register until actually gripped by the cylinder grippers.

The transfer table and its frame rest upon the cylinder frame 30 and follow the rising and falling movement thereof. In order to prevent the sheet of paper or other stock from flying off of the transfer table 97 as it is lowered, the paper is retained in position on the table 97 by air suction which is extended up through suitable openings 116 (Figure 13) in the table, said openings leading from an air tight chamber 117 secured to the lower side of the table 97 and having a communication with two air hose or conduits 118 and 119 which are operatively associated with a source of vacuum to be re ferred to later. At the time that the table 97 is shifted laterally and forwardly toward the cylinder, it is appreciated that the air connection or the pipe sections which are in butt relationship will be broken at the points 120, whereupon the sheet of paper or other stock is no longer positively held on the table 97. At the time that the vacuum holding effect on the sheet of stock is released. the sheet of stock is then immediately thereafter properly aligned or registered and placed in engagement with the cylinder grippers 33, which are momentarily opened and closed by the mechanism hereinabove described, whereupon the sheet of stock is wrapped around the cylinder as the latter is given its upward movement, during which time the stock receives the impression 'or printing, the type at the same time moving downwardly.

By referring to Figures 15, 1G, and 117, it will be noted that the under part of the suction shoe is provided with two air chambers 121 provided with suction holes 122. A suction is extended through the conduit 123 from a suitable'source to be referred to hereinafter. wherebyat predetermined intervals, such, for example, when the suction shoe is dipped down into engagement with the top sheet of stock, the latter is drawn or picked upand transferred to the transfer table. When the stock is transferred to the transfer table, the effective suction at the suction shoe 92 is rendered ineffective by means to be considered later.

(fyh'nder tripping mechanism.

When the cylinder .31, which has a vertically rectilinear movement, reaches its upper limit, it is tripped so that the same may be moved downwardly out of engagement with the type. Means is provided for moving the cylinder back into engagement with the type at its lower limit of movement preparatory to the next upward movement of the cylinder. This means includes (referring to Figures 1, 9 and 18) a rack bar 124 slidably mounted in a casing 125 carried by the cylinder frame. The lower part of this rack bar extends out of the casing 125, and when the same has been moved downwardly with the cylinder and cylinder frame to a point adjacent the lower extreme limit of movement of the cylinder,the rack bar 124 engages with a stop member 126, whereby the rack bar 1% as such continuesits downward movement and rises in its casing, thereby causing its cooperating gear 127 to rotate in a clockwise direction. In view of the fact that this gear has a; pin 128 ournaled in a block 129 slidably mounted in the guide arm 130, upon clockwise rotation of the gear 127 the block is caused to slideinwardly with respect to the guide arm 130, caus ng at the same time a' downwardly turning movement of the guide arm 130. In view of the fact that the pivotal center 131 of the guide arm 130 is eccentric with respect to the center 132 of the cylinder,'the cylinder 31 is swung into a position where it Wlll engage the type for the next upward movement.

Let it be assumed that a sheet of paper or other stock has been grippedby the cylinder grippers and that the cylinder has been moved to a position where .11: Wlll engage the type for printing purposes, preparatory to the upward movement of the cylinder. lylinder 31 with its frame and other associated parts is moved upwardly. When the cylinder reaches its upward limit of'movement, or substantially so, the stock having been printed, the upper extended end of the rack bar 124 passes into engagement witha stop 133 (Figure 1) secured to the mam frame, causing the rack bar as such to discontinue its upward movement and on the other hand to be moved downwardly in its casing, thereby vcausing its associated gear 127 to rotate in a counterclockwise direction, causing the block 129 to slide outwardly in the arm 130 and rocking the cylinder 31 to a position where it will not engage the type on the next downward movement of the cylinder. The cylinder is locked in both its in and out positions with respect to the type because of the location of centers.

It is when the cylinder has reached its upper limit of movement that (see Figure 1) the sheet of stock is removed from the cylinder by delivery grippers 134 to be referred to later. At the same time it will be noted that the suction shoe has carried another sheet of paper from the stock table 59 onto the transfer table 97. Just at the moment that a sheet of stock is deposited upon the transfer table 97, the suction openings 116 therein are covered, causing the paper or stock to be held on the transfer table, it be ing understood that the suction extending to the transfer table at this time is controlled by means to be referred to later.

At the moment that the sheet of stock covers the suction openings 116 on the transfer table 97, a suction is produced (see Figure 25) on the stop member side of the piston 135, movably mounted in the cylinder 136, which is secured to the main press frame, whereby the stop 126 is moved into the path of movement of the rack bar 124. This stop member 126 must lie in the path of movement of the rack bar 124 so that when the cylinder reaches a point adjacent its lower limit of movement the cylinder may be moved from a tripped position into a printing position.

It will be noted that when the cylinder is moved upwardly into the upper position, a cam projection 137 (Figures 9 and 25) mounted on the cylinder frame forces the stop member 126 inwardly out of the path of movement of the rack bar 124 for the purpose of preventing the cylinder from moving into printing position the next time the cylinder reaches its lower limitof movement, unless a sheet of stock has been transferred to the transfer table and covers the suction openings 116.

Delivery mechanism.

Referrin now more particularly to the delivery gri mere 134 (see Figures 1, 2 and 26), it will lie noted that each of the gripers includes an upper relatively stationary aw 138 and a lower relatively movable spring jaw 139, the rear end of which is clamped to the rear portion of the stationary jaw 138. Mounted in the stationary jaw 138 is a pin 140 carrying a projection 141, which when rotated downwardly depresses the spring jaw 139 in a manner to open the gripper for receiving the sheet of stock from the cylinder 31 preparatory to transferring the same to the receiving ta le or jogger 142. The stationary gripper jaw 138 is mounted upon an arm 113, the lower end of which is secured in a casting 1 14; (Figures 6 and 7) mounted upon a supported shaft 145, said casting having a downwardly and rearwardly extending arm 146, having a guideway for the reception of a sliding block 147 (see Figure 6) having a pin 148 movable in the 

